Capacity of non-Markovianity to boost the efficiency of molecular switches

TL;DR

This paper demonstrates that non-Markovian memory effects can enhance the efficiency of molecular switches, specifically photoisomerization, surpassing the limits of Markovian dynamics in quantum thermodynamics.

Contribution

It provides the first rigorous proof that non-Markovianity can serve as a resource to boost efficiency in biological quantum processes.

Findings

Memory effects increase photoisomerization efficiency beyond Markovian limits.

Non-Markovian dynamics can serve as a resource in quantum thermodynamics.

Rigorous proof linking non-Markovianity to enhanced biological quantum process efficiency.

Abstract

Quantum resource theory formulations of thermodynamics offer a versatile tool for the study of fundamental limitations to the efficiency of physical processes, independently of the microscopic details governing their dynamics. Despite the ubiquitous presence of non-Markovian dynamics in open quantum systems at the nanoscale, rigorous proofs of their beneficial effects on the efficiency of quantum dynamical processes at the bio-molecular level have not been reported yet. Here we combine the resource theory of athermality with concepts from the theory of divisibility classes for quantum channels, to prove that memory effects can increase the efficiency of photoisomerization to levels that are not achievable under a purely thermal Markovian (i.e. memoryless) evolution. This provides rigorous evidence that memory effects can provide a resource in biological quantum dynamics, and, more generally, quantum thermodynamics at the nanoscale.